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Structure and ^(57)Fe conversion electron Mssbauer spectroscopy study of Mn-Zn ferrite nanocrystal thin films by electroless plating in aqueous solution

Structure and ^(57)Fe conversion electron Mssbauer spectroscopy study of Mn-Zn ferrite nanocrystal thin films by electroless plating in aqueous solution
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摘要 Mn1-xZnxFe2O4 thin films with various Zn contents and of different thickness were synthesized on glass substrates directly by electroless plating in aqueous solution at 90℃ without heat treatment.The Mn-Zn ferrite films have a single spinel phase structure and well-crystallized columnar grains growing perpendicularly to the substrates.The results of conversion electron 57Fe M?ssbauer spectroscopy(CEMS)indicate that the cation distribution of Mn1-xZnxFe2O4 ferrite nanocrystal thin films fabricated by electroless plating is different from the bulk materials' and a great quantity of Fe3+ ions are still present on A sites for x>0.5.When the Zn content of the films increases,Fe3+ ions in the films transfer from A sites to B sites and the hyperfine magnetic field reduces,suggesting that Zn2+ has strong chemical affinity towards the A sites.On the other side,with the increase of the thickness of the films,Fe3+ ions,at B sites in the spinel structure,increase and the array of magnetic moments no longer lies in the thin film plane completely.At x = 0.5,Hc and Ms of Mn1-xZnxFe2O4 thin films show a minimum of 3.7 kA/m and a maximum of 419.6 kA/m,respectively. Mn1-xZnxFe2O4thin films with various Zn contents and of different thickness were synthesized on glass substrates directly by electroless plating in aqueous solution at 90℃ without heat treatment. The Mn-Zn ferrite films have a single spinel phase structure and well-crystallized columnar grains growing per- pendicularly to the substrates. The results of conversion electron ^57Fe Mossbauer spectroscopy (CEMS) Indicate that the cation distribution of Mn1-xZnxFe204 ferrite nanocrystal thin films fabricated by electroless plating is different from the bulk materials' and a great quantity of Fe^3+ ions are still present on A sites for x〉0.5. When the Zn content of the films increases, Fe^3+ ions in the films transfer from A sites to B sites and the hyperfine magnetic field reduces, suggesting that Zn2. has strong chemical affinity towards the A sites. On the other side, with the increase of the thickness of the films, Fe3+ ions, at B sites in the spinel structure, increase and the array of magnetic moments no longer lies in the thin film plane completely. At x = 0.5, Hc and Ms of Mn1-xZnxFe204thin films show a minimum of 3.7 kA/m and a maximum of 419.6 kA/m, respectively.
出处 《Chinese Science Bulletin》 SCIE EI CAS 2008年第3期321-328,共8页
基金 the National Natural Science Foundation of China(Grant No.90505007)
关键词 锰-锌铁素体 纳米晶薄膜 化学镀层 光谱学 薄膜结构 Mn-Zn ferrite, thin films, CEMS, electroless plating
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  • 1李发伸,任立元,牛紫平,王海新,王涛.Magnetic moment distributions in a-Fe nanowire array[J].Science China Chemistry,2003,46(1):90-95. 被引量:1
  • 2Fashen Li,Liyuan Ren,Ziping Niu,Haixin Wang,Tao Wang.Magnetic moment distributions in α- Fe nanowire array[J].Science in China Series B: Chemistry.2003(1) 被引量:1
  • 3Williams C M,Chrisey D B,Lubitz P,et al.The magnetic and structural properties of pulsed laser deposited epitaxial MnZn-ferrite films[].Journal of Applied Physics.1994 被引量:1
  • 4Kiyomura T,Gomi M.Electrical properties of MgO insulating layers in spin-dependent tunnelingjunctions using Fe3O4[].Journal of Applied Physics.2000 被引量:1
  • 5Suzuki Y,et al.Structure and magnetic properties of epitaxial spinel ferrite thin films[].Applied Physics Letters.1996 被引量:1
  • 6Liu Y,Cao J W,Yang Z.The structure and magnetic properties of Mn-Zn ferrite thin films fabricated by alternately sputtering[].Materials Science and Engineering B Solid–State Materials for Advanced Technology.2005 被引量:1
  • 7Son S,Swaminathan R,McHenry M E.Structure and magnetic properties of rf thermally plasma synthesized Mn and Mn-Zn ferrite nanoparticles[].Journal of Applied Physics.2003 被引量:1
  • 8Abe M,Itoh T,Tamaura Y et al.Ferrite-organic multilayer film for microwave monolithic integrate circuits prepared by ferrite plating based on the spray-spin-coating method[].Journal of Applied Physics.1988 被引量:1
  • 9Abe M,Tanno Y,Tamaura Y.Direct formation of ferrite films in wet process[].Journal of Applied Physics.1985 被引量:1
  • 10Abe M,Tamaura Y.Ferrite plating in aqueous solution:New tech-nique for preparing magnetic thin film[].Journal of Applied Physics.1984 被引量:1

二级参考文献1

  • 1PengYong,ZhangHaoli,PanShanlin et al.Magnetic properties and magnetization reversal of-Fe nanowires deposited in alumina film,J[].Applied Physics.2000 被引量:1
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